
Hikvision Wired 4-Way Power Relay Expander | DS-PM1-O4H-H
The Hikvision DS-PM1-O4H-H is a wired 4-way power relay expander for the Hikvision AX Hybrid PRO alarm panel. Its four onboard 16 A relays let the panel switch power-hungry devices on command.

Key Features:
Four Power Relays: Four onboard power relays, each handling up to 16 A, switched on command from the AX Hybrid PRO panel.
Speed-X Bus Cascading: One uplink port to the control panel and one downlink port for the next expander.

Tamper Protection: Front and rear tamper protection.
Technical Specifications:
| Model | DS-PM1-O4H-H |
| Relay outputs | 4 onboard power relays |
| Relay rating | Up to 16 A per relay |
| Bus | 2 x Speed-X bus: 1 uplink to control panel, 1 downlink for next expander (cascading) |
| Serial port | 1 TTL serial port |
| Tamper protection | Front and rear tamper |
| Power supply (module) | 9 to 24 VDC, 1 A |
| Maximum current | 210 mA @ 12 VDC |
| Quiescent current | 65 mA @ 12 VDC |
| Dimensions (W x H x D) | 110 x 155 x 32.5 mm |
| Weight | 333.1 g |
| Shell material | Plastic |
| Operating temperature | -10 °C to 40 °C |
| Operating humidity | 10% to 90% |
Compatibility: Works with the Hikvision AX Hybrid PRO alarm control panel.
📄 Datasheet: Download the official Hikvision DS-PM1-O4H-H datasheet (PDF)